This video was played today at BCC2 [Bar Camp 2 , Chennai] by one of the presenter. It explains what is Web 2.0 in an excellent way, it cant get better than this.
BarCamp is an ad-hoc gathering born from the desire for people to share and learn in an open environment. It is an intense event with discussions, demos and interaction from participants.
BarCamp will be held in Chennai on October 18th and 19th @ The Indian Institute of Technology (IIT), Madras , IC & SR Auditorium. For more info Click Here